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The Three Gorges Dam is the largest hydroelectric dam in the world. It is located in the middle of the tree gorges on the Yangtze River, the third longest in the world, in the Hubei Province of China.
The Three Gorges Dam consists of a main dam wall, and a section on the right with a set of five locks, which are devices used to raise boats and ships. 1  The dam is: 7,575 feet (2,309 m) long. 2  The dam uses: 27,200,000 cubic meters (35,600,000 cubic yards) of concrete. 3  The reservoir is: 574 feet (175 m) above sea level.